Investigation of Alien Invasive Species in Forest and Grassland Wet Ecosystem in Qujing City
A survey of alien invasive species in the forest and grassland ecosystem within the scope of Qujing City is organized,and the basic situation of key alien invasive species in the city's forests,grasslands,and wetlands is investigated.Risk and hazard assessments of invasive alien species is conducted.Prevention and control strategies for major invasive alien species in forests,grasslands,and wetlands are proposed,which provides comprehensive,accurate,and objective basic data information for developing management and prevention plans for invasive alien species,protecting forest,grassland,and wetland resources,and maintaining ecological security.The results showed that a total of 24 invasive species were found in the forests,grasslands,and wetlands of Qujing City,ac-counting for 55.8％of the 43 key invasive species in Yunnan Province.Among them,there are 5 species of aquatic plants,11 species of terrestrial plants,4 species of invasive insects from outside,1 species of invasive pathogenic microorganism from outside and three species of invasive invertebrates and vertebrates.Through analysis,there is one species with high risk(hazard level Ⅰ)of invasive alien species in the wet forests and grasslands of Qujing City,accounting for 4.2％;There are 11 types of medium risk(hazard level Ⅱ),accounting for 45.8％;There are 12 types of low-risk(hazard level Ⅲ),accounting for 50％.
invasive alien speciesforest and grassland and wet landrisk levelshazard levelQujing City
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